CN213448055U - Replaceable anti-falling beam energy dissipation and shock absorption device suitable for medium-small span beam bridge - Google Patents
Replaceable anti-falling beam energy dissipation and shock absorption device suitable for medium-small span beam bridge Download PDFInfo
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- CN213448055U CN213448055U CN202022096755.XU CN202022096755U CN213448055U CN 213448055 U CN213448055 U CN 213448055U CN 202022096755 U CN202022096755 U CN 202022096755U CN 213448055 U CN213448055 U CN 213448055U
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Abstract
The utility model discloses a replaceable anti-falling beam energy dissipation and shock absorption device suitable for a medium and small span girder bridge, which comprises an upper connecting piece and a lower connecting piece, wherein the upper connecting piece and the lower connecting piece extend along the length direction of the bridge, the upper connecting piece is abutted against the side surface of a main girder of the bridge, and the lower connecting piece is fixedly connected on the upper surface of a bent cap of the bridge; and a plurality of damping energy dissipation members extending along the length direction of the bridge are detachably connected between the upper connecting piece and the lower connecting piece. The utility model can limit the displacement of the upper structure of the middle and small span girder bridge during earthquake, and effectively prevent the girder falling problem of the bridge during earthquake by using the damping energy consumption piece to absorb shock and absorb energy; after the earthquake, only the deformed damping energy dissipation part needs to be replaced, the damping energy dissipation part is detachably connected with the upper connecting piece and the lower connecting piece, and is controllable, easy to detect, repair and replace, the traffic recovery time after the earthquake is greatly shortened, and the life and property loss of people can be reduced to the maximum extent.
Description
Technical Field
The utility model relates to a bridge antidetonation technical field especially relates to a but beam energy consumption damping device is prevented falling by substitution suitable for medium and small span girder bridge.
Background
The earthquake in China is characterized by high occurrence frequency, large intensity, wide distribution range, large casualties, serious earthquake disasters, incomplete statistics, more than 6-grade destructive earthquakes in almost all provinces in China since the 20 th century, more than 7-grade earthquakes in at least two times in about 3 years on average, and nothing such as Wenchuan earthquake, Yushu earthquake, Lushan earthquake, Jiuzhaigou earthquake and the like causes serious life and property loss. It is statistically estimated that, among these destructive earthquakes, the earthquakes occurring in mountainous areas account for more than half of them. After an earthquake occurs, the smooth traffic routes play a role in lifting earthquake relief smoothly, and especially in life line projects such as roads, railways, urban bridges and the like, the traffic is blocked after the earthquake is destroyed, so that the earthquake relief is extremely unfavorable to be carried out. Under the action of strong shock, the upper structure and the lower structure of the bridge can generate relative displacement, and the falling, longitudinal and transverse displacement, beam end collision and block shearing of the upper structure are easy to occur. The collapse of the falling beam is the most serious earthquake damage of the bridge, and the effective method for avoiding the earthquake damage is to adopt a beam falling prevention measure.
At present, common beam falling prevention devices are generally divided into longitudinal and transverse, the common longitudinal beam falling prevention devices comprise inhaul cable limiting devices, beam connecting devices and the like, and the transverse limiting devices comprise stop blocks, transverse limiting locks and the like. The existing beam falling prevention device is not deeply researched in the aspect of quick replacement, and the traffic recovery time after an earthquake is greatly influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the replaceable anti-beam-falling energy dissipation and damping device applicable to the medium-span and small-span beam bridge is needed to solve the problems, is simple in structure and low in manufacturing cost, can prevent the bridge from being damaged by beam falling, and can be quickly replaced to shorten the post-earthquake traffic recovery time.
The utility model discloses a following technical scheme realizes:
a replaceable anti-beam-falling energy dissipation and shock absorption device suitable for a medium-span and small-span beam bridge comprises an upper connecting piece and a lower connecting piece, wherein the upper connecting piece and the lower connecting piece extend along the length direction of the bridge; a plurality of shock-absorbing energy-consuming parts which extend along the length direction of the bridge are detachably connected between the upper connecting piece and the lower connecting piece.
In one embodiment, the yield strength of the shock-absorbing and energy-dissipating component is less than the yield strength of the upper connecting component and the lower connecting component.
In one embodiment, the distance from the energy-absorbing and energy-dissipating piece to the lower end face of the upper connecting piece is equal to the distance from the energy-absorbing and energy-dissipating piece to the upper end face of the lower connecting piece.
In one embodiment, the shock-absorbing energy-dissipating parts are arranged at equal intervals along the length direction of the bridge.
In one embodiment, the upper side of the damping energy-consuming part and the upper connecting part, the lower side of the damping energy-consuming part and the lower connecting part are respectively and correspondingly provided with a vertically arranged friction stroke hole, and a bolt is arranged at the friction stroke hole in a penetrating way; the diameter of the friction stroke hole is larger than the diameter of the screw of the bolt.
In one embodiment, at least three groups of friction stroke holes are formed on the upper side of the shock-absorbing and energy-consuming part and are correspondingly formed in the upper connecting part, and the friction stroke holes are uniformly distributed around the shock-absorbing and energy-consuming part; at least three groups of friction stroke holes are formed on the lower side of the damping energy-consuming part and the lower connecting part correspondingly, and are uniformly distributed around the damping energy-consuming part.
In one embodiment, a plurality of collision blocks are arranged between the upper connecting piece and the main beam of the bridge, and the collision blocks are fixedly connected with the upper connecting piece and are arranged at equal intervals along the length direction of the bridge.
In one embodiment, a fixed seat is arranged between the lower connecting piece and the bridge cover beam, the fixed seat is detachably connected with the lower connecting piece, and the fixed seat is fixedly connected with the bridge cover beam.
In one embodiment, the size of the fixed seat is larger than that of the lower connecting piece.
In one embodiment, the bolt is a high strength bolt.
Compared with the prior art, the technical scheme of the utility model following advantage and beneficial effect have at least:
the utility model can limit the displacement of the upper structure of the middle and small span girder bridge during earthquake, and effectively prevent the girder falling problem of the bridge during earthquake by using the damping energy consumption piece to absorb shock and absorb energy; after the earthquake, only the deformed damping energy dissipation part needs to be replaced, the damping energy dissipation part is detachably connected with the upper connecting piece and the lower connecting piece, the structure is simple, the manufacturing cost is low, the manufacturing and the installation are easy, the replacement can be quickly carried out on site, the traffic recovery time after the earthquake is greatly shortened, and the loss of lives and properties of people can be reduced to the maximum extent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a replaceable anti-beam-falling energy dissipation device provided in an embodiment of the present invention;
fig. 2 is a schematic view illustrating an installation of the replaceable anti-drop energy dissipation and damping device on a bridge according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the connection between the damping energy-consuming member and the upper and lower connecting members provided by the embodiment of the present invention.
Icon: 1-upper connecting piece, 11-upper block-shaped piece, 12-upper connecting part, 2-lower connecting piece, 21-lower block-shaped piece, 22-lower connecting part, 3-damping energy-consuming piece, 4-friction stroke hole, 5-bolt, 6-collision block, 7-fixing seat, 8-main beam and 9-cover beam.
Detailed Description
For making the purpose, technical scheme and advantage of the utility model clearer, will combine below the utility model discloses the drawing in the embodiment is gone on more clearly, describe completely the replaceable anti-beam energy consumption damping device that falls who is applicable to well little span girder bridge. The preferred embodiments of the replaceable drop beam prevention dissipative vibration damping device are shown in the drawings, however, the replaceable drop beam prevention dissipative vibration damping device can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The terms "central," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, when used in reference to a particular orientation or positional relationship, are used for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
In the description of the present invention, it should be further noted that the terms "disposed," "mounted," "connected," and "connected" used herein should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, a replaceable anti-drop energy dissipation device for a medium-small span bridge comprises an upper connecting piece 1 and a lower connecting piece 2 extending along the length direction of the bridge, wherein the upper connecting piece 1 is abutted against the side surface of a main beam 8 of the bridge, and the lower connecting piece 2 is fixedly connected to the upper surface of a cover beam 9 of the bridge; go up and to dismantle between connecting piece 1 and the lower connecting piece 2 and be connected with the shock attenuation power consumption piece 3 of a plurality of, a plurality of shock attenuation power consumption piece 3 extends along bridge length direction and arranges. The transverse displacement of the upper structure of the middle-small span beam bridge can be limited during earthquake, and the shock absorption and energy absorption of the shock absorption energy consumption piece 3 are utilized, so that the beam falling problem of the bridge in the earthquake can be effectively prevented; after the earthquake, only the deformed damping energy dissipation member 3 needs to be replaced, the damping energy dissipation member 3 can be detachably connected with the upper connecting member 2 and the lower connecting member 2 in a bolt bolting mode, the structure is simple, the manufacturing cost is low, and the manufacturing cost of the device can be reduced by 35% compared with that of the existing device while the same limiting effect of the beam falling prevention device is achieved; and the system can be quickly replaced on site, greatly shortens the traffic recovery time after the earthquake, and can furthest reduce the life and property loss of people.
Specifically, the upper connecting member 1 may be a transversely arranged block-shaped member, or as shown in fig. 1, includes an upper block-shaped member 11 and upper connecting portions 12 extending downward for connecting the energy-dissipating and damping members 3, the number of the upper connecting portions 12 is the same as the number of the energy-dissipating and damping members 3, and the upper connecting portions 12 having corresponding lengths may be designed according to the beam bodies having different heights; similarly, the lower connecting member 2 may also be a transversely-arranged block-shaped member, or as shown in fig. 1, includes a lower block-shaped member 21 and a lower connecting portion 22 extending upward and used for connecting the energy dissipating members 3, the number of the lower connecting portions 22 is the same as the number of the energy dissipating members 3, and the lower connecting portions 22 having corresponding lengths may be designed according to the beam bodies having different heights, so that the practicability is improved.
Furthermore, the yield strength of the damping energy dissipation part 3 is smaller than that of the upper connecting part 1 and the lower connecting part 2, namely the damping energy dissipation part 3 can be made of low-yield-strength steel, the steel strength is determined according to the specific design strength requirement of the bridge, and the seismic performance of the bridge is improved while the displacement of the upper structure of the bridge is limited.
Further, as shown in fig. 1, the distance from the energy-dissipating shock-absorbing member 3 to the lower end surface of the upper connecting member 1 is equal to the distance from the energy-dissipating shock-absorbing member 3 to the upper end surface of the lower connecting member 2, that is, the length of the upper connecting portion 12 of the upper connecting member 1 for connecting the energy-dissipating shock-absorbing member 3 is equal to the length of the lower connecting portion 22 of the lower connecting section for connecting the energy-dissipating shock-absorbing member 3, so that the two ends of the energy-dissipating shock-absorbing member 3 are uniformly stressed and the deformation of the energy-dissipating.
Furthermore, as shown in fig. 1, the shock-absorbing energy-consuming members 3 are arranged at equal intervals along the length direction of the bridge, and a shock space is reserved between the shock-absorbing energy-consuming members 3 through the interval arrangement, so that the shock-absorbing efficiency is higher; the distance between each damping energy dissipation piece 3 is equal, so that each damping energy dissipation piece 3 can be uniformly stressed.
Further, as shown in fig. 1 and 3, the upper side of the damping and energy-consuming member 3 and the upper connecting member 1 are correspondingly provided with vertically arranged friction stroke holes 4, the lower side of the damping and energy-consuming member 3 and the lower connecting member 2 are also correspondingly provided with vertically arranged friction stroke holes 4, and bolts 5 are inserted into the friction stroke holes 4 for fixing; the aperture of the friction stroke hole 4 is larger than the diameter of the screw rod of the bolt 5, so that the bolt 5 has a certain moving range at the position of the friction stroke hole 4, a certain transverse moving amount is reserved on the bridge girder 8, the self position can be passively adjusted when the vibration is small, and the effects of damping and cushioning and reducing the deformation of the damping device are achieved. Further preferably, the bolt 5 can be a high-strength bolt, which has higher strength level and shearing resistance and improves the connection stability.
Further, as shown in fig. 1, at least three groups of friction stroke holes 4 are formed on the upper side of the damping and energy dissipating member 3 and the upper connecting member 1, and are uniformly distributed around the damping and energy dissipating member 3; at least three groups of friction stroke holes 4 are arranged on the lower side of the damping energy consumption piece 3 and the lower connecting piece 2 correspondingly, and are uniformly distributed around the damping energy consumption piece 3. Preferably, as shown in fig. 1, in this embodiment, four sets of friction stroke holes 4 are respectively formed on the upper and lower sides of the energy-consuming and shock-absorbing member 3, so that the stress transmission among the upper connecting member 1, the energy-consuming and shock-absorbing member 3, and the lower connecting member 2 is uniform.
Further, as shown in fig. 1 and 2, a plurality of impact blocks 6 are arranged between the upper connecting member 1 and the main beam 8 of the bridge, the impact blocks 6 may be made of elastic materials such as rubber or thermoplastic polyurethane, and the impact blocks 6 are fixedly connected with the upper connecting member 1 and arranged at equal intervals along the length direction of the bridge to play a role of uniform shock absorption.
Further, as shown in fig. 1 and 2, a fixing seat 7 is arranged between the lower connecting piece 2 and the bridge capping beam 9, and the fixing seat 7 and the lower connecting piece 2 can be detachably connected through a bolt 5 so as to conveniently disassemble and assemble the lower connecting piece 2; the fixing seat 7 and the bent cap 9 can also extend into the beam body of the bent cap 9 by penetrating the screw of the bolt 5 through the fixing seat 7 so as to be fixedly connected with the bent cap 9.
Further, as shown in fig. 1 and fig. 2, the size of the fixing seat 7 is larger than that of the lower connecting member 2, that is, the bearing surface of the fixing seat 7 is larger than the bottom surface of the lower connecting member 2 (lower block member 21), so as to prevent the lower connecting member 2 from generating pressure shearing damage to the fixing seat 7.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A replaceable anti-beam-falling energy dissipation and shock absorption device suitable for a medium-span and small-span beam bridge is characterized by comprising an upper connecting piece and a lower connecting piece, wherein the upper connecting piece and the lower connecting piece extend along the length direction of the bridge; and a plurality of damping energy dissipation members which extend along the length direction of the bridge are detachably connected between the upper connecting piece and the lower connecting piece.
2. The replaceable falling beam preventing energy dissipation device of claim 1, wherein the yield strength of the energy dissipation and absorption member is smaller than the yield strength of the upper connection member and the lower connection member.
3. The replaceable falling beam preventing energy dissipation device as claimed in claim 2, wherein the distance from the energy dissipation member to the lower end surface of the upper connection member is equal to the distance from the energy dissipation member to the upper end surface of the lower connection member.
4. The replaceable anti-falling beam energy dissipation device according to claim 3, wherein the energy dissipation members are arranged at equal intervals along the length direction of the bridge.
5. The replaceable anti-falling beam energy dissipation and shock absorption device as claimed in any one of claims 1 to 4, wherein the upper side of the energy dissipation member and the upper connecting member, and the lower side of the energy dissipation member and the lower connecting member are respectively provided with a vertically arranged friction stroke hole, and a bolt is inserted into the friction stroke hole; the diameter of the friction stroke hole is larger than the diameter of the screw of the bolt.
6. The replaceable anti-falling beam energy dissipation and shock absorption device according to claim 5, wherein at least three groups of friction stroke holes are formed in the upper side of the energy dissipation and energy dissipation part and the upper connecting part correspondingly and are uniformly distributed around the energy dissipation and energy dissipation part; at least three groups of friction stroke holes are formed in the lower side of the shock absorption energy dissipation part and the lower connecting part correspondingly, and the friction stroke holes are uniformly distributed around the shock absorption energy dissipation part.
7. The replaceable anti-falling beam energy dissipation and shock absorption device as claimed in any one of claims 1 to 4, wherein a plurality of collision blocks are arranged between the upper connecting member and the main beam of the bridge, and the collision blocks are fixedly connected with the upper connecting member and arranged at equal intervals along the length direction of the bridge.
8. The replaceable anti-falling beam energy dissipation and shock absorption device as claimed in any one of claims 1 to 4, wherein a fixed seat is disposed between the lower connecting member and the bridge capping beam, the fixed seat is detachably connected to the lower connecting member, and the fixed seat is fixedly connected to the bridge capping beam.
9. The replaceable falling beam preventing energy dissipation device as recited in claim 8, wherein the size of the fixing seat is larger than that of the lower connection member.
10. The replaceable falling beam preventing energy dissipation device as recited in claim 5, wherein the bolts are high-strength bolts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022096755.XU CN213448055U (en) | 2020-09-22 | 2020-09-22 | Replaceable anti-falling beam energy dissipation and shock absorption device suitable for medium-small span beam bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022096755.XU CN213448055U (en) | 2020-09-22 | 2020-09-22 | Replaceable anti-falling beam energy dissipation and shock absorption device suitable for medium-small span beam bridge |
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| CN213448055U true CN213448055U (en) | 2021-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941398A (en) * | 2022-06-06 | 2022-08-26 | 重庆三峡学院 | Detachable steel concrete composite beam with self-resetting device |
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2020
- 2020-09-22 CN CN202022096755.XU patent/CN213448055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941398A (en) * | 2022-06-06 | 2022-08-26 | 重庆三峡学院 | Detachable steel concrete composite beam with self-resetting device |
| CN114941398B (en) * | 2022-06-06 | 2023-08-04 | 重庆三峡学院 | Detachable steel concrete composite beam with self-resetting device |
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